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From git-site-r...@apache.org
Subject [07/51] [partial] hbase-site git commit: Published site at .
Date Sun, 12 Nov 2017 15:16:59 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/abb69192/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
index 008b7d0..942938b 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html
@@ -32,557 +32,557 @@
 <span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.ipc.IPCUtil.setCancelled;<a name="line.24"></a>
 <span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.ipc.IPCUtil.write;<a name="line.25"></a>
 <span class="sourceLineNo">026</span><a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message.Builder;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcCallback;<a name="line.29"></a>
-<span class="sourceLineNo">030</span><a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.io.BufferedInputStream;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.io.BufferedOutputStream;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.io.DataInputStream;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.io.DataOutputStream;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import java.io.IOException;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import java.io.InputStream;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import java.io.InterruptedIOException;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import java.io.OutputStream;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import java.net.Socket;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import java.net.SocketTimeoutException;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import java.net.UnknownHostException;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import java.nio.ByteBuffer;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import java.security.PrivilegedExceptionAction;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import java.util.ArrayDeque;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import java.util.Locale;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import java.util.Queue;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import java.util.concurrent.ConcurrentMap;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span>import javax.security.sasl.SaslException;<a name="line.51"></a>
-<span class="sourceLineNo">052</span><a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.commons.logging.Log;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.commons.logging.LogFactory;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.conf.Configuration;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.exceptions.ConnectionClosingException;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.ipc.HBaseRpcController.CancellationCallback;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.CellBlockMeta;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ConnectionHeader;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ExceptionResponse;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ResponseHeader;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.security.HBaseSaslRpcClient;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.security.SaslUtil.QualityOfProtection;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.util.ExceptionUtil;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.io.IOUtils;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.net.NetUtils;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.htrace.Trace;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.htrace.TraceScope;<a name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span>/**<a name="line.81"></a>
-<span class="sourceLineNo">082</span> * Thread that reads responses and notifies callers. Each connection owns a socket connected to a<a name="line.82"></a>
-<span class="sourceLineNo">083</span> * remote address. Calls are multiplexed through this socket: responses may be delivered out of<a name="line.83"></a>
-<span class="sourceLineNo">084</span> * order.<a name="line.84"></a>
-<span class="sourceLineNo">085</span> */<a name="line.85"></a>
-<span class="sourceLineNo">086</span>@InterfaceAudience.Private<a name="line.86"></a>
-<span class="sourceLineNo">087</span>class BlockingRpcConnection extends RpcConnection implements Runnable {<a name="line.87"></a>
-<span class="sourceLineNo">088</span><a name="line.88"></a>
-<span class="sourceLineNo">089</span>  private static final Log LOG = LogFactory.getLog(BlockingRpcConnection.class);<a name="line.89"></a>
-<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span>  private final BlockingRpcClient rpcClient;<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>  private final String threadName;<a name="line.93"></a>
-<span class="sourceLineNo">094</span>  @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",<a name="line.94"></a>
-<span class="sourceLineNo">095</span>      justification = "We are always under lock actually")<a name="line.95"></a>
-<span class="sourceLineNo">096</span>  private Thread thread;<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span>  // connected socket. protected for writing UT.<a name="line.98"></a>
-<span class="sourceLineNo">099</span>  protected Socket socket = null;<a name="line.99"></a>
-<span class="sourceLineNo">100</span>  private DataInputStream in;<a name="line.100"></a>
-<span class="sourceLineNo">101</span>  private DataOutputStream out;<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span>  private HBaseSaslRpcClient saslRpcClient;<a name="line.103"></a>
-<span class="sourceLineNo">104</span><a name="line.104"></a>
-<span class="sourceLineNo">105</span>  // currently active calls<a name="line.105"></a>
-<span class="sourceLineNo">106</span>  private final ConcurrentMap&lt;Integer, Call&gt; calls = new ConcurrentHashMap&lt;&gt;();<a name="line.106"></a>
-<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span>  private final CallSender callSender;<a name="line.108"></a>
-<span class="sourceLineNo">109</span><a name="line.109"></a>
-<span class="sourceLineNo">110</span>  private boolean closed = false;<a name="line.110"></a>
-<span class="sourceLineNo">111</span><a name="line.111"></a>
-<span class="sourceLineNo">112</span>  private byte[] connectionHeaderPreamble;<a name="line.112"></a>
-<span class="sourceLineNo">113</span><a name="line.113"></a>
-<span class="sourceLineNo">114</span>  private byte[] connectionHeaderWithLength;<a name="line.114"></a>
-<span class="sourceLineNo">115</span><a name="line.115"></a>
-<span class="sourceLineNo">116</span>  private boolean waitingConnectionHeaderResponse = false;<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span>  /**<a name="line.118"></a>
-<span class="sourceLineNo">119</span>   * If the client wants to interrupt its calls easily (i.e. call Thread#interrupt), it gets into a<a name="line.119"></a>
-<span class="sourceLineNo">120</span>   * java issue: an interruption during a write closes the socket/channel. A way to avoid this is to<a name="line.120"></a>
-<span class="sourceLineNo">121</span>   * use a different thread for writing. This way, on interruptions, we either cancel the writes or<a name="line.121"></a>
-<span class="sourceLineNo">122</span>   * ignore the answer if the write is already done, but we don't stop the write in the middle. This<a name="line.122"></a>
-<span class="sourceLineNo">123</span>   * adds a thread per region server in the client, so it's kept as an option.<a name="line.123"></a>
-<span class="sourceLineNo">124</span>   * &lt;p&gt;<a name="line.124"></a>
-<span class="sourceLineNo">125</span>   * The implementation is simple: the client threads adds their call to the queue, and then wait<a name="line.125"></a>
-<span class="sourceLineNo">126</span>   * for an answer. The CallSender blocks on the queue, and writes the calls one after the other. On<a name="line.126"></a>
-<span class="sourceLineNo">127</span>   * interruption, the client cancels its call. The CallSender checks that the call has not been<a name="line.127"></a>
-<span class="sourceLineNo">128</span>   * canceled before writing it.<a name="line.128"></a>
-<span class="sourceLineNo">129</span>   * &lt;/p&gt;<a name="line.129"></a>
-<span class="sourceLineNo">130</span>   * When the connection closes, all the calls not yet sent are dismissed. The client thread is<a name="line.130"></a>
-<span class="sourceLineNo">131</span>   * notified with an appropriate exception, as if the call was already sent but the answer not yet<a name="line.131"></a>
-<span class="sourceLineNo">132</span>   * received.<a name="line.132"></a>
-<span class="sourceLineNo">133</span>   * &lt;/p&gt;<a name="line.133"></a>
-<span class="sourceLineNo">134</span>   */<a name="line.134"></a>
-<span class="sourceLineNo">135</span>  private class CallSender extends Thread {<a name="line.135"></a>
-<span class="sourceLineNo">136</span><a name="line.136"></a>
-<span class="sourceLineNo">137</span>    private final Queue&lt;Call&gt; callsToWrite;<a name="line.137"></a>
-<span class="sourceLineNo">138</span><a name="line.138"></a>
-<span class="sourceLineNo">139</span>    private final int maxQueueSize;<a name="line.139"></a>
-<span class="sourceLineNo">140</span><a name="line.140"></a>
-<span class="sourceLineNo">141</span>    public CallSender(String name, Configuration conf) {<a name="line.141"></a>
-<span class="sourceLineNo">142</span>      int queueSize = conf.getInt("hbase.ipc.client.write.queueSize", 1000);<a name="line.142"></a>
-<span class="sourceLineNo">143</span>      callsToWrite = new ArrayDeque&lt;&gt;(queueSize);<a name="line.143"></a>
-<span class="sourceLineNo">144</span>      this.maxQueueSize = queueSize;<a name="line.144"></a>
-<span class="sourceLineNo">145</span>      setDaemon(true);<a name="line.145"></a>
-<span class="sourceLineNo">146</span>      setName(name + " - writer");<a name="line.146"></a>
-<span class="sourceLineNo">147</span>    }<a name="line.147"></a>
-<span class="sourceLineNo">148</span><a name="line.148"></a>
-<span class="sourceLineNo">149</span>    public void sendCall(final Call call) throws IOException {<a name="line.149"></a>
-<span class="sourceLineNo">150</span>      if (callsToWrite.size() &gt;= maxQueueSize) {<a name="line.150"></a>
-<span class="sourceLineNo">151</span>        throw new IOException("Can't add the call " + call.id<a name="line.151"></a>
-<span class="sourceLineNo">152</span>            + " to the write queue. callsToWrite.size()=" + callsToWrite.size());<a name="line.152"></a>
-<span class="sourceLineNo">153</span>      }<a name="line.153"></a>
-<span class="sourceLineNo">154</span>      callsToWrite.offer(call);<a name="line.154"></a>
-<span class="sourceLineNo">155</span>      BlockingRpcConnection.this.notifyAll();<a name="line.155"></a>
-<span class="sourceLineNo">156</span>    }<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span>    public void remove(Call call) {<a name="line.158"></a>
-<span class="sourceLineNo">159</span>      callsToWrite.remove(call);<a name="line.159"></a>
-<span class="sourceLineNo">160</span>      // By removing the call from the expected call list, we make the list smaller, but<a name="line.160"></a>
-<span class="sourceLineNo">161</span>      // it means as well that we don't know how many calls we cancelled.<a name="line.161"></a>
-<span class="sourceLineNo">162</span>      calls.remove(call.id);<a name="line.162"></a>
-<span class="sourceLineNo">163</span>      call.setException(new CallCancelledException("Call id=" + call.id + ", waitTime="<a name="line.163"></a>
-<span class="sourceLineNo">164</span>          + (EnvironmentEdgeManager.currentTime() - call.getStartTime()) + ", rpcTimeout="<a name="line.164"></a>
-<span class="sourceLineNo">165</span>          + call.timeout));<a name="line.165"></a>
-<span class="sourceLineNo">166</span>    }<a name="line.166"></a>
-<span class="sourceLineNo">167</span><a name="line.167"></a>
-<span class="sourceLineNo">168</span>    /**<a name="line.168"></a>
-<span class="sourceLineNo">169</span>     * Reads the call from the queue, write them on the socket.<a name="line.169"></a>
-<span class="sourceLineNo">170</span>     */<a name="line.170"></a>
-<span class="sourceLineNo">171</span>    @Override<a name="line.171"></a>
-<span class="sourceLineNo">172</span>    public void run() {<a name="line.172"></a>
-<span class="sourceLineNo">173</span>      synchronized (BlockingRpcConnection.this) {<a name="line.173"></a>
-<span class="sourceLineNo">174</span>        while (!closed) {<a name="line.174"></a>
-<span class="sourceLineNo">175</span>          if (callsToWrite.isEmpty()) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span>            // We should use another monitor object here for better performance since the read<a name="line.176"></a>
-<span class="sourceLineNo">177</span>            // thread also uses ConnectionImpl.this. But this makes the locking schema more<a name="line.177"></a>
-<span class="sourceLineNo">178</span>            // complicated, can do it later as an optimization.<a name="line.178"></a>
-<span class="sourceLineNo">179</span>            try {<a name="line.179"></a>
-<span class="sourceLineNo">180</span>              BlockingRpcConnection.this.wait();<a name="line.180"></a>
-<span class="sourceLineNo">181</span>            } catch (InterruptedException e) {<a name="line.181"></a>
-<span class="sourceLineNo">182</span>            }<a name="line.182"></a>
-<span class="sourceLineNo">183</span>            // check if we need to quit, so continue the main loop instead of fallback.<a name="line.183"></a>
-<span class="sourceLineNo">184</span>            continue;<a name="line.184"></a>
-<span class="sourceLineNo">185</span>          }<a name="line.185"></a>
-<span class="sourceLineNo">186</span>          Call call = callsToWrite.poll();<a name="line.186"></a>
-<span class="sourceLineNo">187</span>          if (call.isDone()) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span>            continue;<a name="line.188"></a>
-<span class="sourceLineNo">189</span>          }<a name="line.189"></a>
-<span class="sourceLineNo">190</span>          try {<a name="line.190"></a>
-<span class="sourceLineNo">191</span>            tracedWriteRequest(call);<a name="line.191"></a>
-<span class="sourceLineNo">192</span>          } catch (IOException e) {<a name="line.192"></a>
-<span class="sourceLineNo">193</span>            // exception here means the call has not been added to the pendingCalls yet, so we need<a name="line.193"></a>
-<span class="sourceLineNo">194</span>            // to fail it by our own.<a name="line.194"></a>
-<span class="sourceLineNo">195</span>            if (LOG.isDebugEnabled()) {<a name="line.195"></a>
-<span class="sourceLineNo">196</span>              LOG.debug("call write error for call #" + call.id, e);<a name="line.196"></a>
-<span class="sourceLineNo">197</span>            }<a name="line.197"></a>
-<span class="sourceLineNo">198</span>            call.setException(e);<a name="line.198"></a>
-<span class="sourceLineNo">199</span>            closeConn(e);<a name="line.199"></a>
-<span class="sourceLineNo">200</span>          }<a name="line.200"></a>
-<span class="sourceLineNo">201</span>        }<a name="line.201"></a>
-<span class="sourceLineNo">202</span>      }<a name="line.202"></a>
-<span class="sourceLineNo">203</span>    }<a name="line.203"></a>
-<span class="sourceLineNo">204</span><a name="line.204"></a>
-<span class="sourceLineNo">205</span>    /**<a name="line.205"></a>
-<span class="sourceLineNo">206</span>     * Cleans the call not yet sent when we finish.<a name="line.206"></a>
-<span class="sourceLineNo">207</span>     */<a name="line.207"></a>
-<span class="sourceLineNo">208</span>    public void cleanup(IOException e) {<a name="line.208"></a>
-<span class="sourceLineNo">209</span>      IOException ie = new ConnectionClosingException(<a name="line.209"></a>
-<span class="sourceLineNo">210</span>          "Connection to " + remoteId.address + " is closing.");<a name="line.210"></a>
-<span class="sourceLineNo">211</span>      for (Call call : callsToWrite) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span>        call.setException(ie);<a name="line.212"></a>
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-<span class="sourceLineNo">216</span>  }<a name="line.216"></a>
-<span class="sourceLineNo">217</span><a name="line.217"></a>
-<span class="sourceLineNo">218</span>  BlockingRpcConnection(BlockingRpcClient rpcClient, ConnectionId remoteId) throws IOException {<a name="line.218"></a>
-<span class="sourceLineNo">219</span>    super(rpcClient.conf, AbstractRpcClient.WHEEL_TIMER, remoteId, rpcClient.clusterId,<a name="line.219"></a>
-<span class="sourceLineNo">220</span>        rpcClient.userProvider.isHBaseSecurityEnabled(), rpcClient.codec, rpcClient.compressor);<a name="line.220"></a>
-<span class="sourceLineNo">221</span>    this.rpcClient = rpcClient;<a name="line.221"></a>
-<span class="sourceLineNo">222</span>    if (remoteId.getAddress().isUnresolved()) {<a name="line.222"></a>
-<span class="sourceLineNo">223</span>      throw new UnknownHostException("unknown host: " + remoteId.getAddress().getHostName());<a name="line.223"></a>
-<span class="sourceLineNo">224</span>    }<a name="line.224"></a>
-<span class="sourceLineNo">225</span><a name="line.225"></a>
-<span class="sourceLineNo">226</span>    this.connectionHeaderPreamble = getConnectionHeaderPreamble();<a name="line.226"></a>
-<span class="sourceLineNo">227</span>    ConnectionHeader header = getConnectionHeader();<a name="line.227"></a>
-<span class="sourceLineNo">228</span>    ByteArrayOutputStream baos = new ByteArrayOutputStream(4 + header.getSerializedSize());<a name="line.228"></a>
-<span class="sourceLineNo">229</span>    DataOutputStream dos = new DataOutputStream(baos);<a name="line.229"></a>
-<span class="sourceLineNo">230</span>    dos.writeInt(header.getSerializedSize());<a name="line.230"></a>
-<span class="sourceLineNo">231</span>    header.writeTo(dos);<a name="line.231"></a>
-<span class="sourceLineNo">232</span>    assert baos.size() == 4 + header.getSerializedSize();<a name="line.232"></a>
-<span class="sourceLineNo">233</span>    this.connectionHeaderWithLength = baos.getBuffer();<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span>    UserGroupInformation ticket = remoteId.ticket.getUGI();<a name="line.235"></a>
-<span class="sourceLineNo">236</span>    this.threadName = "IPC Client (" + this.rpcClient.socketFactory.hashCode() + ") connection to "<a name="line.236"></a>
-<span class="sourceLineNo">237</span>        + remoteId.getAddress().toString()<a name="line.237"></a>
-<span class="sourceLineNo">238</span>        + ((ticket == null) ? " from an unknown user" : (" from " + ticket.getUserName()));<a name="line.238"></a>
-<span class="sourceLineNo">239</span><a name="line.239"></a>
-<span class="sourceLineNo">240</span>    if (this.rpcClient.conf.getBoolean(BlockingRpcClient.SPECIFIC_WRITE_THREAD, false)) {<a name="line.240"></a>
-<span class="sourceLineNo">241</span>      callSender = new CallSender(threadName, this.rpcClient.conf);<a name="line.241"></a>
-<span class="sourceLineNo">242</span>      callSender.start();<a name="line.242"></a>
-<span class="sourceLineNo">243</span>    } else {<a name="line.243"></a>
-<span class="sourceLineNo">244</span>      callSender = null;<a name="line.244"></a>
-<span class="sourceLineNo">245</span>    }<a name="line.245"></a>
-<span class="sourceLineNo">246</span>  }<a name="line.246"></a>
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-<span class="sourceLineNo">554</span>      // Get the CryptoCipherMeta, update the HBaseSaslRpcClient for Crypto Cipher<a name="line.554"></a>
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-<span class="sourceLineNo">559</span>    } catch (SocketTimeoutException ste) {<a name="line.559"></a>
-<span class="sourceLineNo">560</span>      LOG.fatal("Can't get the connection header response for rpc timeout, please check if" +<a name="line.560"></a>
-<span class="sourceLineNo">561</span>          " server has the correct configuration to support the additional function.", ste);<a name="line.561"></a>
-<span class="sourceLineNo">562</span>      // timeout when waiting the connection header response, ignore the additional function<a name="line.562"></a>
-<span class="sourceLineNo">563</span>      throw new IOException("Timeout while waiting connection header response", ste);<a name="line.563"></a>
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-<span class="sourceLineNo">571</span>    // reset the inputStream/outputStream for Crypto AES encryption<a name="line.571"></a>
-<span class="sourceLineNo">572</span>    this.in = new DataInputStream(new BufferedInputStream(saslRpcClient.getInputStream()));<a name="line.572"></a>
-<span class="sourceLineNo">573</span>    this.out = new DataOutputStream(new BufferedOutputStream(saslRpcClient.getOutputStream()));<a name="line.573"></a>
-<span class="sourceLineNo">574</span>  }<a name="line.574"></a>
-<span class="sourceLineNo">575</span><a name="line.575"></a>
-<span class="sourceLineNo">576</span>  private void tracedWriteRequest(Call call) throws IOException {<a name="line.576"></a>
-<span class="sourceLineNo">577</span>    try (TraceScope ignored = Trace.startSpan("RpcClientImpl.tracedWriteRequest", call.span)) {<a name="line.577"></a>
+<span class="sourceLineNo">027</span>import java.io.BufferedInputStream;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.io.BufferedOutputStream;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.io.DataInputStream;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.io.DataOutputStream;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.io.IOException;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.io.InputStream;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import java.io.InterruptedIOException;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import java.io.OutputStream;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import java.net.Socket;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import java.net.SocketTimeoutException;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import java.net.UnknownHostException;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import java.nio.ByteBuffer;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import java.security.PrivilegedExceptionAction;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import java.util.ArrayDeque;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import java.util.Locale;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import java.util.Queue;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import java.util.concurrent.ConcurrentMap;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>import javax.security.sasl.SaslException;<a name="line.47"></a>
+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.commons.logging.Log;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.commons.logging.LogFactory;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.conf.Configuration;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.exceptions.ConnectionClosingException;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.ipc.HBaseRpcController.CancellationCallback;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.security.HBaseSaslRpcClient;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.security.SaslUtil.QualityOfProtection;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message.Builder;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcCallback;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.63"></a>
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+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.CellBlockMeta;<a name="line.65"></a>
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+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.68"></a>
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+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.ExceptionUtil;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.io.IOUtils;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.net.NetUtils;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.htrace.core.TraceScope;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span>/**<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * Thread that reads responses and notifies callers. Each connection owns a socket connected to a<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * remote address. Calls are multiplexed through this socket: responses may be delivered out of<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * order.<a name="line.83"></a>
+<span class="sourceLineNo">084</span> */<a name="line.84"></a>
+<span class="sourceLineNo">085</span>@InterfaceAudience.Private<a name="line.85"></a>
+<span class="sourceLineNo">086</span>class BlockingRpcConnection extends RpcConnection implements Runnable {<a name="line.86"></a>
+<span class="sourceLineNo">087</span><a name="line.87"></a>
+<span class="sourceLineNo">088</span>  private static final Log LOG = LogFactory.getLog(BlockingRpcConnection.class);<a name="line.88"></a>
+<span class="sourceLineNo">089</span><a name="line.89"></a>
+<span class="sourceLineNo">090</span>  private final BlockingRpcClient rpcClient;<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span>  private final String threadName;<a name="line.92"></a>
+<span class="sourceLineNo">093</span>  @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",<a name="line.93"></a>
+<span class="sourceLineNo">094</span>      justification = "We are always under lock actually")<a name="line.94"></a>
+<span class="sourceLineNo">095</span>  private Thread thread;<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span>  // connected socket. protected for writing UT.<a name="line.97"></a>
+<span class="sourceLineNo">098</span>  protected Socket socket = null;<a name="line.98"></a>
+<span class="sourceLineNo">099</span>  private DataInputStream in;<a name="line.99"></a>
+<span class="sourceLineNo">100</span>  private DataOutputStream out;<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
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+<span class="sourceLineNo">104</span>  // currently active calls<a name="line.104"></a>
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+<span class="sourceLineNo">106</span><a name="line.106"></a>
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+<span class="sourceLineNo">114</span><a name="line.114"></a>
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+<span class="sourceLineNo">116</span><a name="line.116"></a>
+<span class="sourceLineNo">117</span>  /**<a name="line.117"></a>
+<span class="sourceLineNo">118</span>   * If the client wants to interrupt its calls easily (i.e. call Thread#interrupt), it gets into a<a name="line.118"></a>
+<span class="sourceLineNo">119</span>   * java issue: an interruption during a write closes the socket/channel. A way to avoid this is to<a name="line.119"></a>
+<span class="sourceLineNo">120</span>   * use a different thread for writing. This way, on interruptions, we either cancel the writes or<a name="line.120"></a>
+<span class="sourceLineNo">121</span>   * ignore the answer if the write is already done, but we don't stop the write in the middle. This<a name="line.121"></a>
+<span class="sourceLineNo">122</span>   * adds a thread per region server in the client, so it's kept as an option.<a name="line.122"></a>
+<span class="sourceLineNo">123</span>   * &lt;p&gt;<a name="line.123"></a>
+<span class="sourceLineNo">124</span>   * The implementation is simple: the client threads adds their call to the queue, and then wait<a name="line.124"></a>
+<span class="sourceLineNo">125</span>   * for an answer. The CallSender blocks on the queue, and writes the calls one after the other. On<a name="line.125"></a>
+<span class="sourceLineNo">126</span>   * interruption, the client cancels its call. The CallSender checks that the call has not been<a name="line.126"></a>
+<span class="sourceLineNo">127</span>   * canceled before writing it.<a name="line.127"></a>
+<span class="sourceLineNo">128</span>   * &lt;/p&gt;<a name="line.128"></a>
+<span class="sourceLineNo">129</span>   * When the connection closes, all the calls not yet sent are dismissed. The client thread is<a name="line.129"></a>
+<span class="sourceLineNo">130</span>   * notified with an appropriate exception, as if the call was already sent but the answer not yet<a name="line.130"></a>
+<span class="sourceLineNo">131</span>   * received.<a name="line.131"></a>
+<span class="sourceLineNo">132</span>   * &lt;/p&gt;<a name="line.132"></a>
+<span class="sourceLineNo">133</span>   */<a name="line.133"></a>
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+<span class="sourceLineNo">135</span><a name="line.135"></a>
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+<span class="sourceLineNo">137</span><a name="line.137"></a>
+<span class="sourceLineNo">138</span>    private final int maxQueueSize;<a name="line.138"></a>
+<span class="sourceLineNo">139</span><a name="line.139"></a>
+<span class="sourceLineNo">140</span>    public CallSender(String name, Configuration conf) {<a name="line.140"></a>
+<span class="sourceLineNo">141</span>      int queueSize = conf.getInt("hbase.ipc.client.write.queueSize", 1000);<a name="line.141"></a>
+<span class="sourceLineNo">142</span>      callsToWrite = new ArrayDeque&lt;&gt;(queueSize);<a name="line.142"></a>
+<span class="sourceLineNo">143</span>      this.maxQueueSize = queueSize;<a name="line.143"></a>
+<span class="sourceLineNo">144</span>      setDaemon(true);<a name="line.144"></a>
+<span class="sourceLineNo">145</span>      setName(name + " - writer");<a name="line.145"></a>
+<span class="sourceLineNo">146</span>    }<a name="line.146"></a>
+<span class="sourceLineNo">147</span><a name="line.147"></a>
+<span class="sourceLineNo">148</span>    public void sendCall(final Call call) throws IOException {<a name="line.148"></a>
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+<span class="sourceLineNo">150</span>        throw new IOException("Can't add the call " + call.id<a name="line.150"></a>
+<span class="sourceLineNo">151</span>            + " to the write queue. callsToWrite.size()=" + callsToWrite.size());<a name="line.151"></a>
+<span class="sourceLineNo">152</span>      }<a name="line.152"></a>
+<span class="sourceLineNo">153</span>      callsToWrite.offer(call);<a name="line.153"></a>
+<span class="sourceLineNo">154</span>      BlockingRpcConnection.this.notifyAll();<a name="line.154"></a>
+<span class="sourceLineNo">155</span>    }<a name="line.155"></a>
+<span class="sourceLineNo">156</span><a name="line.156"></a>
+<span class="sourceLineNo">157</span>    public void remove(Call call) {<a name="line.157"></a>
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+<span class="sourceLineNo">159</span>      // By removing the call from the expected call list, we make the list smaller, but<a name="line.159"></a>
+<span class="sourceLineNo">160</span>      // it means as well that we don't know how many calls we cancelled.<a name="line.160"></a>
+<span class="sourceLineNo">161</span>      calls.remove(call.id);<a name="line.161"></a>
+<span class="sourceLineNo">162</span>      call.setException(new CallCancelledException("Call id=" + call.id + ", waitTime="<a name="line.162"></a>
+<span class="sourceLineNo">163</span>          + (EnvironmentEdgeManager.currentTime() - call.getStartTime()) + ", rpcTimeout="<a name="line.163"></a>
+<span class="sourceLineNo">164</span>          + call.timeout));<a name="line.164"></a>
+<span class="sourceLineNo">165</span>    }<a name="line.165"></a>
+<span class="sourceLineNo">166</span><a name="line.166"></a>
+<span class="sourceLineNo">167</span>    /**<a name="line.167"></a>
+<span class="sourceLineNo">168</span>     * Reads the call from the queue, write them on the socket.<a name="line.168"></a>
+<span class="sourceLineNo">169</span>     */<a name="line.169"></a>
+<span class="sourceLineNo">170</span>    @Override<a name="line.170"></a>
+<span class="sourceLineNo">171</span>    public void run() {<a name="line.171"></a>
+<span class="sourceLineNo">172</span>      synchronized (BlockingRpcConnection.this) {<a name="line.172"></a>
+<span class="sourceLineNo">173</span>        while (!closed) {<a name="line.173"></a>
+<span class="sourceLineNo">174</span>          if (callsToWrite.isEmpty()) {<a name="line.174"></a>
+<span class="sourceLineNo">175</span>            // We should use another monitor object here for better performance since the read<a name="line.175"></a>
+<span class="sourceLineNo">176</span>            // thread also uses ConnectionImpl.this. But this makes the locking schema more<a name="line.176"></a>
+<span class="sourceLineNo">177</span>            // complicated, can do it later as an optimization.<a name="line.177"></a>
+<span class="sourceLineNo">178</span>            try {<a name="line.178"></a>
+<span class="sourceLineNo">179</span>              BlockingRpcConnection.this.wait();<a name="line.179"></a>
+<span class="sourceLineNo">180</span>            } catch (InterruptedException e) {<a name="line.180"></a>
+<span class="sourceLineNo">181</span>            }<a name="line.181"></a>
+<span class="sourceLineNo">182</span>            // check if we need to quit, so continue the main loop instead of fallback.<a name="line.182"></a>
+<span class="sourceLineNo">183</span>            continue;<a name="line.183"></a>
+<span class="sourceLineNo">184</span>          }<a name="line.184"></a>
+<span class="sourceLineNo">185</span>          Call call = callsToWrite.poll();<a name="line.185"></a>
+<span class="sourceLineNo">186</span>          if (call.isDone()) {<a name="line.186"></a>
+<span class="sourceLineNo">187</span>            continue;<a name="line.187"></a>
+<span class="sourceLineNo">188</span>          }<a name="line.188"></a>
+<span class="sourceLineNo">189</span>          try {<a name="line.189"></a>
+<span class="sourceLineNo">190</span>            tracedWriteRequest(call);<a name="line.190"></a>
+<span class="sourceLineNo">191</span>          } catch (IOException e) {<a name="line.191"></a>
+<span class="sourceLineNo">192</span>            // exception here means the call has not been added to the pendingCalls yet, so we need<a name="line.192"></a>
+<span class="sourceLineNo">193</span>            // to fail it by our own.<a name="line.193"></a>
+<span class="sourceLineNo">194</span>            if (LOG.isDebugEnabled()) {<a name="line.194"></a>
+<span class="sourceLineNo">195</span>              LOG.debug("call write error for call #" + call.id, e);<a name="line.195"></a>
+<span class="sourceLineNo">196</span>            }<a name="line.196"></a>
+<span class="sourceLineNo">197</span>            call.setException(e);<a name="line.197"></a>
+<span class="sourceLineNo">198</span>            closeConn(e);<a name="line.198"></a>
+<span class="sourceLineNo">199</span>          }<a name="line.199"></a>
+<span class="sourceLineNo">200</span>        }<a name="line.200"></a>
+<span class="sourceLineNo">201</span>      }<a name="line.201"></a>
+<span class="sourceLineNo">202</span>    }<a name="line.202"></a>
+<span class="sourceLineNo">203</span><a name="line.203"></a>
+<span class="sourceLineNo">204</span>    /**<a name="line.204"></a>
+<span class="sourceLineNo">205</span>     * Cleans the call not yet sent when we finish.<a name="line.205"></a>
+<span class="sourceLineNo">206</span>     */<a name="line.206"></a>
+<span class="sourceLineNo">207</span>    public void cleanup(IOException e) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span>      IOException ie = new ConnectionClosingException(<a name="line.208"></a>
+<span class="sourceLineNo">209</span>          "Connection to " + remoteId.address + " is closing.");<a name="line.209"></a>
+<span class="sourceLineNo">210</span>      for (Call call : callsToWrite) {<a name="line.210"></a>
+<span class="sourceLineNo">211</span>        call.setException(ie);<a name="line.211"></a>
+<span class="sourceLineNo">212</span>      }<a name="line.212"></a>
+<span class="sourceLineNo">213</span>      callsToWrite.clear();<a name="line.213"></a>
+<span class="sourceLineNo">214</span>    }<a name="line.214"></a>
+<span class="sourceLineNo">215</span>  }<a name="line.215"></a>
+<span class="sourceLineNo">216</span><a name="line.216"></a>
+<span class="sourceLineNo">217</span>  BlockingRpcConnection(BlockingRpcClient rpcClient, ConnectionId remoteId) throws IOException {<a name="line.217"></a>
+<span class="sourceLineNo">218</span>    super(rpcClient.conf, AbstractRpcClient.WHEEL_TIMER, remoteId, rpcClient.clusterId,<a name="line.218"></a>
+<span class="sourceLineNo">219</span>        rpcClient.userProvider.isHBaseSecurityEnabled(), rpcClient.codec, rpcClient.compressor);<a name="line.219"></a>
+<span class="sourceLineNo">220</span>    this.rpcClient = rpcClient;<a name="line.220"></a>
+<span class="sourceLineNo">221</span>    if (remoteId.getAddress().isUnresolved()) {<a name="line.221"></a>
+<span class="sourceLineNo">222</span>      throw new UnknownHostException("unknown host: " + remoteId.getAddress().getHostName());<a name="line.222"></a>
+<span class="sourceLineNo">223</span>    }<a name="line.223"></a>
+<span class="sourceLineNo">224</span><a name="line.224"></a>
+<span class="sourceLineNo">225</span>    this.connectionHeaderPreamble = getConnectionHeaderPreamble();<a name="line.225"></a>
+<span class="sourceLineNo">226</span>    ConnectionHeader header = getConnectionHeader();<a name="line.226"></a>
+<span class="sourceLineNo">227</span>    ByteArrayOutputStream baos = new ByteArrayOutputStream(4 + header.getSerializedSize());<a name="line.227"></a>
+<span class="sourceLineNo">228</span>    DataOutputStream dos = new DataOutputStream(baos);<a name="line.228"></a>
+<span class="sourceLineNo">229</span>    dos.writeInt(header.getSerializedSize());<a name="line.229"></a>
+<span class="sourceLineNo">230</span>    header.writeTo(dos);<a name="line.230"></a>
+<span class="sourceLineNo">231</span>    assert baos.size() == 4 + header.getSerializedSize();<a name="line.231"></a>
+<span class="sourceLineNo">232</span>    this.connectionHeaderWithLength = baos.getBuffer();<a name="line.232"></a>
+<span class="sourceLineNo">233</span><a name="line.233"></a>
+<span class="sourceLineNo">234</span>    UserGroupInformation ticket = remoteId.ticket.getUGI();<a name="line.234"></a>
+<span class="sourceLineNo">235</span>    this.threadName = "IPC Client (" + this.rpcClient.socketFactory.hashCode() + ") connection to "<a name="line.235"></a>
+<span class="sourceLineNo">236</span>        + remoteId.getAddress().toString()<a name="line.236"></a>
+<span class="sourceLineNo">237</span>        + ((ticket == null) ? " from an unknown user" : (" from " + ticket.getUserName()));<a name="line.237"></a>
+<span class="sourceLineNo">238</span><a name="line.238"></a>
+<span class="sourceLineNo">239</span>    if (this.rpcClient.conf.getBoolean(BlockingRpcClient.SPECIFIC_WRITE_THREAD, false)) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span>      callSender = new CallSender(threadName, this.rpcClient.conf);<a name="line.240"></a>
+<span class="sourceLineNo">241</span>      callSender.start();<a name="line.241"></a>
+<span class="sourceLineNo">242</span>    } else {<a name="line.242"></a>
+<span class="sourceLineNo">243</span>      callSender = null;<a name="line.243"></a>
+<span class="sourceLineNo">244</span>    }<a name="line.244"></a>
+<span class="sourceLineNo">245</span>  }<a name="line.245"></a>
+<span class="sourceLineNo">246</span><a name="line.246"></a>
+<span class="sourceLineNo">247</span>  // protected for write UT.<a name="line.247"></a>
+<span class="sourceLineNo">248</span>  protected void setupConnection() throws IOException {<a name="line.248"></a>
+<span class="sourceLineNo">249</span>    short ioFailures = 0;<a name="line.249"></a>
+<span class="sourceLineNo">250</span>    short timeoutFailures = 0;<a name="line.250"></a>
+<span class="sourceLineNo">251</span>    while (true) {<a name="line.251"></a>
+<span class="sourceLineNo">252</span>      try {<a name="line.252"></a>
+<span class="sourceLineNo">253</span>        this.socket = this.rpcClient.socketFactory.createSocket();<a name="line.253"></a>
+<span class="sourceLineNo">254</span>        this.socket.setTcpNoDelay(this.rpcClient.isTcpNoDelay());<a name="line.254"></a>
+<span class="sourceLineNo">255</span>        this.socket.setKeepAlive(this.rpcClient.tcpKeepAlive);<a name="line.255"></a>
+<span class="sourceLineNo">256</span>        if (this.rpcClient.localAddr != null) {<a name="line.256"></a>
+<span class="sourceLineNo">257</span>          this.socket.bind(this.rpcClient.localAddr);<a name="line.257"></a>
+<span class="sourceLineNo">258</span>        }<a name="line.258"></a>
+<span class="sourceLineNo">259</span>        NetUtils.connect(this.socket, remoteId.getAddress(), this.rpcClient.connectTO);<a name="line.259"></a>
+<span class="sourceLineNo">260</span>        this.socket.setSoTimeout(this.rpcClient.readTO);<a name="line.260"></a>
+<span class="sourceLineNo">261</span>        return;<a name="line.261"></a>
+<span class="sourceLineNo">262</span>      } catch (SocketTimeoutException toe) {<a name="line.262"></a>
+<span class="sourceLineNo">263</span>        /*<a name="line.263"></a>
+<span class="sourceLineNo">264</span>         * The max number of retries is 45, which amounts to 20s*45 = 15 minutes retries.<a name="line.264"></a>
+<span class="sourceLineNo">265</span>         */<a name="line.265"></a>
+<span class="sourceLineNo">266</span>        handleConnectionFailure(timeoutFailures++, this.rpcClient.maxRetries, toe);<a name="line.266"></a>
+<span class="sourceLineNo">267</span>      } catch (IOException ie) {<a name="line.267"></a>
+<span class="sourceLineNo">268</span>        handleConnectionFailure(ioFailures++, this.rpcClient.maxRetries, ie);<a name="line.268"></a>
+<span class="sourceLineNo">269</span>      }<a name="line.269"></a>
+<span class="sourceLineNo">270</span>    }<a name="line.270"></a>
+<span class="sourceLineNo">271</span>  }<a name="line.271"></a>
+<span class="sourceLineNo">272</span><a name="line.272"></a>
+<span class="sourceLineNo">273</span>  /**<a name="line.273"></a>
+<span class="sourceLineNo">274</span>   * Handle connection failures If the current number of retries is equal to the max number of<a name="line.274"></a>
+<span class="sourceLineNo">275</span>   * retries, stop retrying and throw the exception; Otherwise backoff N seconds and try connecting<a name="line.275"></a>
+<span class="sourceLineNo">276</span>   * again. This Method is only called from inside setupIOstreams(), which is synchronized. Hence<a name="line.276"></a>
+<span class="sourceLineNo">277</span>   * the sleep is synchronized; the locks will be retained.<a name="line.277"></a>
+<span class="sourceLineNo">278</span>   * @param curRetries current number of retries<a name="line.278"></a>
+<span class="sourceLineNo">279</span>   * @param maxRetries max number of retries allowed<a name="line.279"></a>
+<span class="sourceLineNo">280</span>   * @param ioe failure reason<a name="line.280"></a>
+<span class="sourceLineNo">281</span>   * @throws IOException if max number of retries is reached<a name="line.281"></a>
+<span class="sourceLineNo">282</span>   */<a name="line.282"></a>
+<span class="sourceLineNo">283</span>  private void handleConnectionFailure(int curRetries, int maxRetries, IOException ioe)<a name="line.283"></a>
+<span class="sourceLineNo">284</span>      throws IOException {<a name="line.284"></a>
+<span class="sourceLineNo">285</span>    closeSocket();<a name="line.285"></a>
+<span class="sourceLineNo">286</span><a name="line.286"></a>
+<span class="sourceLineNo">287</span>    // throw the exception if the maximum number of retries is reached<a name="line.287"></a>
+<span class="sourceLineNo">288</span>    if (curRetries &gt;= maxRetries || ExceptionUtil.isInterrupt(ioe)) {<a name="line.288"></a>
+<span class="sourceLineNo">289</span>      throw ioe;<a name="line.289"></a>
+<span class="sourceLineNo">290</span>    }<a name="line.290"></a>
+<span class="sourceLineNo">291</span><a name="line.291"></a>
+<span class="sourceLineNo">292</span>    // otherwise back off and retry<a name="line.292"></a>
+<span class="sourceLineNo">293</span>    try {<a name="line.293"></a>
+<span class="sourceLineNo">294</span>      Thread.sleep(this.rpcClient.failureSleep);<a name="line.294"></a>
+<span class="sourceLineNo">295</span>    } catch (InterruptedException ie) {<a name="line.295"></a>
+<span class="sourceLineNo">296</span>      ExceptionUtil.rethrowIfInterrupt(ie);<a name="line.296"></a>
+<span class="sourceLineNo">297</span>    }<a name="line.297"></a>
+<span class="sourceLineNo">298</span><a name="line.298"></a>
+<span class="sourceLineNo">299</span>    LOG.info("Retrying connect to server: " + remoteId.getAddress() + " after sleeping "<a name="line.299"></a>
+<span class="sourceLineNo">300</span>        + this.rpcClient.failureSleep + "ms. Already tried " + curRetries + " time(s).");<a name="line.300"></a>
+<span class="sourceLineNo">301</span>  }<a name="line.301"></a>
+<span class="sourceLineNo">302</span><a name="line.302"></a>
+<span class="sourceLineNo">303</span>  /*<a name="line.303"></a>
+<span class="sourceLineNo">304</span>   * wait till someone signals us to start reading RPC response or it is idle too long, it is marked<a name="line.304"></a>
+<span class="sourceLineNo">305</span>   * as to be closed, or the client is marked as not running.<a name="line.305"></a>
+<span class="sourceLineNo">306</span>   * @return true if it is time to read a response; false otherwise.<a name="line.306"></a>
+<span class="sourceLineNo">307</span>   */<a name="line.307"></a>
+<span class="sourceLineNo">308</span>  private synchronized boolean waitForWork() {<a name="line.308"></a>
+<span class="sourceLineNo">309</span>    // beware of the concurrent access to the calls list: we can add calls, but as well<a name="line.309"></a>
+<span class="sourceLineNo">310</span>    // remove them.<a name="line.310"></a>
+<span class="sourceLineNo">311</span>    long waitUntil = EnvironmentEdgeManager.currentTime() + this.rpcClient.minIdleTimeBeforeClose;<a name="line.311"></a>
+<span class="sourceLineNo">312</span>    for (;;) {<a name="line.312"></a>
+<span class="sourceLineNo">313</span>      if (thread == null) {<a name="line.313"></a>
+<span class="sourceLineNo">314</span>        return false;<a name="line.314"></a>
+<span class="sourceLineNo">315</span>      }<a name="line.315"></a>
+<span class="sourceLineNo">316</span>      if (!calls.isEmpty()) {<a name="line.316"></a>
+<span class="sourceLineNo">317</span>        return true;<a name="line.317"></a>
+<span class="sourceLineNo">318</span>      }<a name="line.318"></a>
+<span class="sourceLineNo">319</span>      if (EnvironmentEdgeManager.currentTime() &gt;= waitUntil) {<a name="line.319"></a>
+<span class="sourceLineNo">320</span>        closeConn(<a name="line.320"></a>
+<span class="sourceLineNo">321</span>          new IOException("idle connection closed with " + calls.size() + " pending request(s)"));<a name="line.321"></a>
+<span class="sourceLineNo">322</span>        return false;<a name="line.322"></a>
+<span class="sourceLineNo">323</span>      }<a name="line.323"></a>
+<span class="sourceLineNo">324</span>      try {<a name="line.324"></a>
+<span class="sourceLineNo">325</span>        wait(Math.min(this.rpcClient.minIdleTimeBeforeClose, 1000));<a name="line.325"></a>
+<span class="sourceLineNo">326</span>      } catch (InterruptedException e) {<a name="line.326"></a>
+<span class="sourceLineNo">327</span>      }<a name="line.327"></a>
+<span class="sourceLineNo">328</span>    }<a name="line.328"></a>
+<span class="sourceLineNo">329</span>  }<a name="line.329"></a>
+<span class="sourceLineNo">330</span><a name="line.330"></a>
+<span class="sourceLineNo">331</span>  @Override<a name="line.331"></a>
+<span class="sourceLineNo">332</span>  public void run() {<a name="line.332"></a>
+<span class="sourceLineNo">333</span>    if (LOG.isTraceEnabled()) {<a name="line.333"></a>
+<span class="sourceLineNo">334</span>      LOG.trace(threadName + ": starting, connections " + this.rpcClient.connections.size());<a name="line.334"></a>
+<span class="sourceLineNo">335</span>    }<a name="line.335"></a>
+<span class="sourceLineNo">336</span>    while (waitForWork()) {<a name="line.336"></a>
+<span class="sourceLineNo">337</span>      readResponse();<a name="line.337"></a>
+<span class="sourceLineNo">338</span>    }<a name="line.338"></a>
+<span class="sourceLineNo">339</span>    if (LOG.isTraceEnabled()) {<a name="line.339"></a>
+<span class="sourceLineNo">340</span>      LOG.trace(threadName + ": stopped, connections " + this.rpcClient.connections.size());<a name="line.340"></a>
+<span class="sourceLineNo">341</span>    }<a name="line.341"></a>
+<span class="sourceLineNo">342</span>  }<a name="line.342"></a>
+<span class="sourceLineNo">343</span><a name="line.343"></a>
+<span class="sourceLineNo">344</span>  private void disposeSasl() {<a name="line.344"></a>
+<span class="sourceLineNo">345</span>    if (saslRpcClient != null) {<a name="line.345"></a>
+<span class="sourceLineNo">346</span>      saslRpcClient.dispose();<a name="line.346"></a>
+<span class="sourceLineNo">347</span>      saslRpcClient = null;<a name="line.347"></a>
+<span class="sourceLineNo">348</span>    }<a name="line.348"></a>
+<span class="sourceLineNo">349</span>  }<a name="line.349"></a>
+<span class="sourceLineNo">350</span><a name="line.350"></a>
+<span c

<TRUNCATED>

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